"19XX" redirects here. For the videogame, see 19XX: The War Against Destiny

The 20th century was the period between January 1, 1901 and December 31, 2000, inclusive. It was the tenth and last century of the 2nd millennium. It is distinct from the century known as the 1900s, which began on January 1, 1900 and ended December 31, 1999.